CONTENTS
3
www.krohne.com
03/2020 - 4000640706 - MA H250-M40 R06 en
H250 M40
1 Safety instructions
6
1.1 Software history ............................................................................................................... 6
1.2 Intended use ..................................................................................................................... 7
1.3 Certifications .................................................................................................................... 8
1.4 Pressure equipment directive.......................................................................................... 8
1.5 Safety instructions from the manufacturer ................................................................... 10
1.5.1 Copyright and data protection .............................................................................................. 10
1.5.2 Disclaimer ............................................................................................................................. 10
1.5.3 Product liability and warranty .............................................................................................. 11
1.5.4 Information concerning the documentation......................................................................... 11
1.5.5 Warnings and symbols used................................................................................................. 12
1.6 Safety instructions for the operator............................................................................... 12
2 Device description
13
2.1 Scope of delivery............................................................................................................. 13
2.2 Device version................................................................................................................. 14
2.2.1 Indicator versions ................................................................................................................. 15
2.2.2 Float damping ....................................................................................................................... 17
2.2.3 Pointer damping.................................................................................................................... 17
2.3 Nameplate ...................................................................................................................... 18
2.4 Description code............................................................................................................. 19
3 Installation
20
3.1 General installation notes .............................................................................................. 20
3.2 Storage ........................................................................................................................... 20
3.3 Transport ........................................................................................................................ 20
3.4 Installation conditions .................................................................................................... 21
3.4.1 Tightening torques ................................................................................................................ 23
3.4.2 Magnetic filters ..................................................................................................................... 23
3.4.3 Heat insulation ...................................................................................................................... 24
4 Electrical connections
25
4.1 Safety instructions.......................................................................................................... 25
4.2 Electrical connection for indicator M40 ......................................................................... 26
4.2.1 Connection of the limit switches K1/K2................................................................................ 26
4.2.2 Current output ESK4A........................................................................................................... 29
4.2.3 ESK4-T limit outputs............................................................................................................. 32
4.2.4 ESK4-T pulse output ............................................................................................................. 34
4.2.5 ESK4-T binary input .............................................................................................................. 35
4.2.6 ESK4-FF / ESK4-PA fieldbus communication...................................................................... 36
4.2.7 Harting HAN 7D connection.................................................................................................. 37
4.3 Grounding connections................................................................................................... 38
4.4 Ingress protection .......................................................................................................... 38
